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Paper: Double Chemistry in Galactic Bulge Planetary Nebulae
Volume: 445, Why Galaxies Care about AGB Stars II: Shining Examples and Common Inhabitants
Page: 333
Authors: Guzman-Ramirez, L.; Zijlstra, A.
Abstract: We present the results of an analysis of 21 planetary nebulae towards the Galactic Bulge investigating the mixed-chemistry phenomenon. We show a correlation between the morphology of the nebulae using HST images and the presence of PAHs in oxygen-rich environments. The PAHs could either arise from ISM sweep-up, or from internal processing. The relation to morphology favors the latter.
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